3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo memory_get_peak_usage(), PHP_EOL; $a = range(1, 10000); $a[-1] = 0; echo memory_get_peak_usage(), PHP_EOL; // 380824 // 874320
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
422328 1308648
Output for 8.1.0 - 8.1.28
422632 1571104
Output for 8.0.0 - 8.0.30
422472 1570640
Output for 7.4.0 - 7.4.33
422648 1570944
Output for 7.3.0 - 7.3.33
422432 1570864
Output for 7.2.0 - 7.2.33
418000 1501352
Output for 7.0.0 - 7.0.32, 7.1.0 - 7.1.33
381296 1464680
Output for 5.6.0 - 5.6.38
220544 1709848
Output for 5.5.0 - 5.5.38
220544 1709800
preferences:
286.93 ms | 401 KiB | 323 Q